(19)

(11)

EP 3 440 812 A1

(12)

(43) Date of publication: 13.02.2019 Bulletin 2019/07 (21) Application number: 16718072.8 (22) Date of filing: 04.04.2016

(51) International Patent Classification (IPC):  H04L 12/927(2013.01) H04L 12/24(2006.01) (86) International application number: PCT/US2016/025921 (87) International publication number: WO 2017/176247 (12.10.2017 Gazette 2017/41)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (71) Applicant: Nokia Technologies Oy 02610 Espoo (FI)	(72) Inventors: SZILAGYI, Peter 02610 Espoo (FI) VULKAN, Csaba 02610 Espoo (FI) (74) Representative: Nokia EPO representatives  Nokia Technologies Oy Karaportti 3 02610 Espoo 02610 Espoo (FI)